Mocomi & Anibrain Digital Technologies
Mocomi: Past Tense and Its Types
Defines past tense and provides examples of the different types.
Other
Tidewater Community College: Writing Center: Verb Tenses
Writing center guide to verb tenses that dicusses present, present continuous, past, past continuous, future, future continuous, present perfect, and past perfect.
Grammarly
Grammarly Blog: Verb Conjugation Grammar Rules
This page explains verb conjugations including persons: first, second, and third person; number: singular and plural; and tenses: present, past, and future and simple, continuous, and perfect. It provides examples of verb conjugations.
English Club
English Club: Basic Tenses: Regular Verbs
Notes and examples of verb tense including past, present, future, past participle, present participle, simple, continuous, perfect, and continuous perfect.